Greyhound There’s a reason why they’re called the 45-mile-per-hour couch potato. They’re bred for sprinting, not marathons, so this is the perfect dog for apartment-dwellers who love to run. A Greyhound will be a great companion for your morning run, then perfectly satisfied lounging on the couch the rest of the day. @Joanna Szewczyk Gierak Szewczyk Gierak Dubiel